Does Phobos have a way to "tee" a range?

For example, suppose you had something like this:

-------------------------------------------------
// Do something with each file in a dir
dirEntries(selectedDir, SpanMode.shallow)
    .filter!someFilterCriteria
    .doSomethingWithFile;
-------------------------------------------------

It would be really nice to be able to "wiretap" that, to trace/debug/etc by nothing more than ADDING a single statement at any desired wiretap point:

-------------------------------------------------
// Do something with each file in a dir
dirEntries(selectedDir, SpanMode.shallow)
    //.tee(a => writeln("FOUND: ", a))  // DEBUG: TRACE ALL FILES FOUND!
    .filter!someFilterCriteria
    //.tee(a => writeln("SELECTED: ", a))  // DEBUG: TRACE RESULT OF FILTER!
    .doSomethingWithFile;
-------------------------------------------------

Does something like this already exist Phobos? I tried looking for a "tee" in st.algorithm but came up nothing. If not, it seems like a pretty glaring omission.

On Monday, 16 October 2017 at 07:28:03 UTC, Nick Sabalausky (Abscissa) wrote:
> Does Phobos have a way to "tee" a range?
>
> For example, suppose you had something like this:
>
> [...]

https://dlang.org/phobos/std_range.html#tee ?

On 10/16/2017 03:30 AM, lobo wrote:
> On Monday, 16 October 2017 at 07:28:03 UTC, Nick Sabalausky (Abscissa) wrote:
>> Does Phobos have a way to "tee" a range?
>>
>> For example, suppose you had something like this:
>>
>> [...]
> 
> https://dlang.org/phobos/std_range.html#tee ?

Ahh, thanks, I was only looking in std.algorithm. Didn't expect it to be in std.range.

On Monday, 16 October 2017 at 07:28:03 UTC, Nick Sabalausky (Abscissa) wrote:
> Does Phobos have a way to "tee" a range?

use my dpldocs search engine

http://dpldocs.info/tee

std.range pops right up!